Coating mechanism.



L. C. PALMER.-

COATING MECHANISM. APPLICATION FILE-D APR. H. 1916.

1,252,019. Patented Jan. 1,1918.

4 SHBETSSHEET I.

1' WITNESSES l/VVE/V T01? L. C. PALMER.

COATING MECHANISM.

APPLICATION FILED APR. n. ma.

1,252,019.. Patented Jan. 1,1918.

4 SHEETS-SHEET 2.

WITNESSES 4 "WE/W05 Mug oc cfww A TTOR/VEYS L. C. PALMER.

COATING MECHANISM.

APPLICATION FILED APR. 11. 1916.

Patented Jan. 1, 1918.

4 SHEETS-SHEET 3.

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A TTOR/VEYS I L. C. PALMER. COATING MECHANISM.

APPLICATION FILED APR. I1. 1916.

1,252,019, Patented Jan. 1, 8. I

4 SHEETS-SHE WITNESSES fiiMkQk ca e WM UNITED STATES PATENT OFFICE.

LYNDON c. PALMER, or BUFFALO, new YORK, ASSIGNOR TO I. N. BURT commmy,

LIMITED, OF BUFFALO, NEW YORK, K

CORPORATION or ONTARIO, CANADA.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Original application Med December 9, 1911, Serial No. 664,774. Dividedand this application filed April 11, 1916. Serial No. 90,410.

To all whom it may concern:

Be it known that I, LYNDON C. PALMER, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Coating Mechanism, ofwhich the following is a full, clear,

and exact description, such as will enable others skilled in the art towhich it appertains to make and use the same.

This invention relates to coating machines, and with respect to its morespecific features to machines of the character referred toadapted tocoat articles with adhesive.

One of the objects of the invention is the provision of mechanism forefliciently coating a surface of a box, especially an inside surfacethereof.

Another object of the invention is to provide a device in which theadhesive is accurately and economically applied to the parts to be gluedwith little waste and without gumming up adjacent parts.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth,,and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings forming part of this specification andwherein similar reference characters refer to similar parts throughoutthe several views,

Figure 1 is a plan viesv of a machine embodying the invention;

Fig. 2 is a side elevation of Fig. 1;

Fig. 3 is an enlarged view, in section, of a portion of the machineshown in Fig. 1; and

Figs. 4 and 5 are detail views of portions of the machine.

This application is a division of a prior application, Ser. No. 664,774,filed December 9, 1911, to which reference may be made for a disclosureof the complete machine. For the urposes of the present application itwill e sufiicient to only briefly describe the general construction andoperation of the machine, the specific description bein confined moreespecially to that part of t e invention to which this application is'particularly directed.

bed late 2, on which is rotatably mounted a box supportin and carryingtable or disk 3. On the upper surface of the table 3, which table may beregarded as an endless carrier, is a ser es of box supports or rests 4,each of which rests is adapted to support a box open face up, so thatthe inner face or inside bottom faces of the boxes may be coated withadhesive, such as glue. The carrler 3 is intermittently rotated so as todispose the box rests opposite certain gluing and other devices betweenthe intervals of ts rotation, and intermittent motion is communicated tothe carrier 3 through the instrumentality of a vertical shaft 5 drivenfrom a horizontally disposed continuously rotating cam shaft 6, to whichmotion is communicated from a main driving shaft 7 through theinstrumentalities of gears 8 and 9. The numeral 10 indicates acounter-shaft driven from the shaft 7 by the bevel gears 11 and 12, andhaving on one end sprocket wheels driving sprocket chains 13 and 14, oneof these chains, as 13, being arranged to operate certain glue supplyingrollers, and the other, as 14,- being arranged to operate certainconveyer mechanism. The conveyer mechanism is indicated by the numeral15, and comprises an endless belt moving in a trough, which belt conveysthe boxes into position to be moved onto the box rests 4 by means of areciprocatory picker 16, motion bein communicated to the belt-15 by thesproc ct chain 14. Above the rotary disk 3 and supported by the bedplate 2 is a stationary platform 17 adapted to serve as a support forcertain arts of the machine. In order to provide f r the accuratepositioning of the boxes with their upstanding flanges on the rests 4,the latter are provided with peripheral projections in the shape offlanges 18, 19 and 20, and, as by the present embodiment provision ismade for labeling substantially rectangular boxes, three sides of therest are provided with flanges, anguonto the box. rest, on which it willbe guided bed plate, support and positioned by said flanges. In orderthat the boxes shall be prevented from substantial displacement in aplane perpendicular to that of the rest, the opposite flanges 18 and 19are rovided with overhanging portions 21, w ich span the thickness ofthe box flanges. The inner flange 20 serves as a stop to limit theradial position of the box relative to the rest and the carrier ,onwhich it is supported, and this stop terminates below the top of the boxflange and is unprovided with an overhanging flange, for purposes whichwill hereinafter appear. The flanges of the rest are accordingl spacedfrom each other peripherally of t e rest to a sufficient extent topermit a box to be drawn from the conveyor into the chamber of the restformed by the flanges aforesaid. A box having been fed onto the supportor rest by the picker mechanism, referred to, the carrier is rotated toconvey the box to a position in which glue is applied thereto. p

The bed plate 2 extends sufliciently to one side of the carrier plate tosupport a glue reservoir comprising a tank 22 having upstanding plates23 supporting glue supply and delivery rollers of the general characterdisclosed in applicants Patent, No. 1,019,351, March 5, 1912. Brackets24, secured to the at one end guide rods 25 extending across the path ofthe box rests, the other ends being supported by brackets 26 secured tothe central stationary platform 17. A glue-applying roller 27 is guidedbetween the bars of said rods and carries glue from the delivery rollerto a glue pad 28 supported in line with a stationary position assumed bythe box rests.

devices whereby the glue-applylng roller is moved from the glue supplyto the pad are generally similar to those described in the aforesaidpatent. The glue pad 28 comprises preferably a rubber block covered withcanvas and held in a plate 29 adjustablymounted in another plate 30resiliently supported upon a cross head 31 to reciprocate toward andfrom the plane of rotation of the carrier in order to deliver glue to abox supported on a rest beneath the same.

, 1n the present embodiment the cross head 31 is provided with a bracketcomprising a block 32 through which pass guiding and supporting pins 33provided with stop nuts 34 at their upper ends, the lower ends of therods being attached to the" plate 30, to the bottom of which latter arefastened undercut guide plates 35 forming a dove-tailed channel adaptedto be slidingly engaged by a projecting portion 36 of the plate 29carrying the pad 28. The plate 30 is provided with depending brackets 37through which pass adjusting screws 38 which abut the ends The manner ofsupporting the guide rods and the guiding of the pad-carrying plate soas to permit the transverse adjustment of the pad relative to I itssupport and also relative to the box rests. Between the plate 30 and theblock 32 and surrounding the pins 33, resilient means, as springs 39,are interposed, and as the cross head is operated the glue pad descendstoward the box rests, being adapted to enter between the flanges of thebox therebeneath and glue the inner bottom face or surface thereof witha yielding pressure, be apparent.

In order to prevent the pad applying glue to the surface of the rest 4,should no box be in position thereon, a rock shaft 40 is journaled onthe side of the block 32 and centrally connected by an arm 41 and link42 to the plate 30. An arm 43 on the end of the shaft 40 has a forkedend engaging a pin 44 of a square detent rod 45 mounted to reciprocatein the block. Supported on the central platform 17 is a base bracket 46,supporting a sliding rod 47, preferably of rectangular cross section,having a pin 48, engaging'a slot 49 in one end of a lever 50 pivoted atits other end to an arm of the bracket 46 and carrying a cam in theshape of an anti-friction roller 51, located in a horizontal plane onaline with the lateral wall of a box when in position on a rest, saidroller being moved by a spring 52 to intersect the path of the box wall,and adapted to be pressed away from the rest by said wall as the boxpasses. Preferably, the rod 47 has a reduced portion comprising a stem53 forming a shoulder 54 and the spring 52 encircles the stem 53, andlies between the shoulder 54 and a removable plate 55 fastened to thebracket, a nut 56 engaging a threaded portion of the stem 53 and servingto adjust the position of the roller 51 relative to the box rest. To therod 47 is ad- ]ustably secured, as by a slot 57 and screw 58, an armforming a stop 59 projecting beyond the bracket and above the plane ofthe box rest, and the spring 52 urges the stop 59 into position beneaththe rod 45 when no box is in position to be glued. Under this conditionthe lower end of rod 45 strikes the sto 59 before the glue pad 29 hasdescended su ciently to touch the rest, and full movement ofthe block 32is permitted without further descent of the pad. When a box is inposition on the rest, the roller 51 will engage the wall of the samejust above the inner flange 20 of the rest, which it will be remembereddoes not extend the full height of the box, and thus the stop 59 is keptout of alinement with the rod 45 and full descent of the glue pad intothe box is permitted. The slot and screw connection with the nut 56enables the tension of spring 52 to be regulated, though the stop 59 beadjusted to different positions relative to the path of the box.

In applying labels'to boxes it is desirable to produce an anticle havinga finished appearance, one in which the label lies smoothly, and withoutair bubbles or wrinkles and one in which the label is accuratelyarranged with rsspect to the article to which it is attached.- To thisend the glue should be applied in definite places, and the label shouldbe aflixed so as to register as accurately as possible with the gluedportion ofthe' article. These objects are efiiciently attained bysupporting the glue pad on rods connected thereto at opposite sides ofthe pad, as by supporting and guiding rods attached to each end of thecross-head 31, and guided in elongated bearings 61 and 62 on the bedplate 2 and stand 1, respectively. Reciprocatory motion is communicatedto the glue pad through the cross-head 31 by a cam 63 secured to shaft6, and engaging a roller 64 on a tie bar 65 connecting the rods 60.

Referring to the operation of the glue-applying roller 27, it is deemedpreferable to move this roller back and forth over the glue pad for eachgluing operation of said pad, and in order to efficiently accomplishthis operation the roller 27 is journaled in a longitudinal frame 66,adapted to reciprocate in the guides 25 which are disposed between theguide rods 60 of the cross head below said head and across the path ofthe box rests. The roller 27 thus moves in line with the space betweenthe rods 60 and glue is applied to the pad uniformly, there beingpractically no tendency of either the pad or the roller to rock on theirsupports, which might result in a greater thickness of glue on one sideof the pad than on the other. The frame 66 is operated through aconnecting rod 67 pivotally joined to the frame 66 at one end, the otherend of the rod being pivotally connected to the end of one arm of a rocklever 68 fulcrumed in a fixed bracket 69, the other arm of the lever 68being adjustably pivotally connected to one end of a connecting rod 70.The opposite end of the rod 70 is pivotally connected to an arm 71 of arock shaft 72 journaled in bearings fastened to the machine frame, andan anti-friction roller 73 projects laterally from the arm 71 into agroove 74 of a cam 75 fastened to the shaft 6. The groove of this cam isso designed that for each rotation of the shaft 6 a complete positivereciprocation of the roller 27 will be effected, with an interveningperiod of rest when said roller is being supplied with glue from therollers of the reservoir.

The operation will be largely apparent from the above description, butmay be briefly described as follows:

The operator places boxes on the belt 15 open side up, whereupon theywill be con- 1 veyed into the path of the picker 16, which will transferthem to the respective supports or rests 4 as these latter presentthemselves opposite the belt. The rotation of the table 3 will carry therests '4 one by one to glue-applying position beneath the glue pad 28,and said pad will descend and enter the box from above and apply glue tothe inside bottom face of the box. Should there be no box upon a rest 4,the spring 52 will urge the stop 59 into position directly beneath thedetent 45, and when the pad descends toward the rest, the detent 45 willcontact the stop 59 before the pad 28 will have descended sufficientlyto contact with the upper face of the rest 4, andthus glue will not beapplied to the upper face of the rest. When a box is in position on arest approaching position to be glued, the side wall or flange of thebox will contact the roller 51 and wipe it aside, thus, causing thelever 50 to move the rod 47 in a direction to carry the stop 59 out ofposition directly beneath the detent 45. Under this condition the fulldescent of the pad28 is permitted, and the box on the rest will becoated with the adhesive on its inside bottom face, as will be apparent.

Thus by the above described construction are accomplished, among others,all of the objects hereinbefore referred te,

- As many changes could be made in the above construction and manyapparently widely different embodiments of this invention could be madewithout departing from the scope thereof, it is intended that all mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense. s

It is also to be understood that the language used in the followingclaim is intended to cover all of the generic and specific features ofthe invention herein described, and all statements of the scope of theinvention, which, as a matter of language, might be said to falltherebetween.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In an apparatus of the character described, in combination, ayieldingly supported glue carrying surface, a support for an article tobe glued, means adapted to cause relative approaching movement betweensaid surface and support to apply glue to an article on said support,and means adaptedto' adjust said surface transversely of the path ofsaid movement.

2. In an apparatus of the character described, in combination, a gluecarrying surface, a support for an article to be glued, means adapted tocause relative approaching movement between said surface and support toapply glue to an article on said support, means movable to and from aposition to limit the extent of said relative movement so as to preventcontact between said glue carrying surface and said support and means,controllable by the presence or absence of an article on said support todetermine the position of said limiting means.

3. In an apparatus of the character described, in combination, a gluecarrying surface, a support for an article to be glued, means adapted tocause relative approaching movement between said surface and support toapply lue to an article on said support, means a apted to ad ust saidsurface transversely of the path 0 said movement, and means adapted tolimit the extent of said relative movement so as to prevent contactbetween said glue carrying surface and said support.

' a glue-applying roller,

4. In an apparatus of the character described, in combination, ayieldingly supported glue carrying surface, a support for an article tobe glued, means adapted to cause relative approaching movement betweensaid surface and support to apply glue to an article on said support,means adapted to adjust said surface transversely of the ath of saidmovement, and means adapted to limit the extent of said relativemovement so as to prevent contact between said glue carrying surface andsaid support.

5. In an apparatus of the character described, in combination, asupport, movable pins passing therethrough, means to limit the movementof the pins in one direction, a plate having a dovetail channel and car-.ried by said pins, means to yieldingly resist movement of the platetoward the support, a second plate adapted to slidingly en age thechannel in the plate, a pad 'carrie by the second plate, and adjustingdevices supported by the first plate and adapted to secure the secondplate in position.

6. In an apparatus of the character described, in combination, asupport, movable pins passing therethrough, means to limit the movementof the pins in one direction, a plate having a dovetail channel andcarried by said pins, means movement of the plate toward the support, asecond plate adapted to slidingly engage the channel in the first plate,a pad carried by the second plate, brackets carried by thefirst-mentioned plate, and adjusting screws supported by the bracketsand adapted to engage the second-mentioned plate.

7. In an apparatus of the character described, in combination, a gluesupply roller,

a movable box suport, a box conveyer, means to transfer a Box from theconveyer to the box support,-a driving shaft, a counter-shaft, a camshaft, operating connections between the driving shaft and thecounter-shaft and cam shaft, a cam on the cam shaft, means operated bythe cam for positively reciprocating the glue-applying roller, sprocketdriving conto yieldingly resist movably mounte a glue-applying rollermovable between the reservoir and the pad in line with the space betweenthe rods, means to reciprocate said rods, and means to operate theapplying roller.

10. In an apparatus of the character described, in combination, a seriesof box rests, means to move the rests intermittently to glue-applyingposition, a cross head comprising spaced guide rods, a glue pad mountedon said head intermediate the rods, means to move the rods toward andfrom the rest in glue-applying osition, and means movable in line with te space between the rods and adapted to apply glue to the pad betweenthe several movements of the rests into glue-applying position.

11. In an apparatus of the character described, in combination, aplurality of box supports, a glue carrier, means to move the supportsone by one into alinement with the carrier, means to move the carriertoward and from the support in alinement, and means adapted to vary thestroke of the carrier.

12. In an apparatus of the character described, in combination, a boxsupport, a glue pad support, means to reciprocate the glue pad supporttoward and from the box support, a glue pad movably mounted on the padsupport, a detent connected to said pad, and a stop adapted to move intoand out of'the path of the detent to control the extent of movement ofthe pad.

13. In an apparatus of the character described, in combination, aplurality of box supports, a glue ad support, a glue pad movably 'mounteon the pad support, means to move the box supports one by one intoglue-applying position relatively to the pad, means to reciprocate thepad toward and from the box support in position, a detent connected tothe pad, a movable stop adapted to prevent the pad contacting the boxsupport, and means adapted to automatically maintain the stop in theline of movement of the detent when no box in position on the support.

14:. In an apparatus of the character described, in combination, aplurality of be: supports, a glue ad support, a glue pad (I on the padsupport,

means to move the box supports one by one into glue-applying positionrelatively to the pad, means to reciprocate the pad toward and from thebox support in position, a detent connected to the pad, a movable stopadapted to prevent the pad contacting the box support, means adapted toautomatically maintain the stop in the line of movement of the detentwhen no box is in position on the support, and cam means adapted tocontact a box and remove the stop from the line of movement of thedetent.

15. In an apparatus of the character described, in combination, anendless carrier, a plurality of means mounted thereon adapted tostationarily position boxes open side up, a glue carrier adapted toenter the boxes and apply glue to the interior of a wall thereof, andmeans adapted to limit the movement of the carrier to a point above theposition assumed by a box whenno box is in gluing position on thecarrier.

16. In an apparatus of the character described, in combination, anendless carrier, a plurality of means mounted thereon adapted tostationarily position boxes open side up, a glue carrier adapted toenter the boxes and apply glue to the interior of a wall thereof, adetent carried thereby, a stationary support, a stop carried thereby, acam connected to the stop, and means to yieldingly hold the cam in thepath of the boxes on the carrier and the stop in the path of the detent.

17. In an apparatus of the character de scribed, in combination, asupport, guiding and supporting pins movably mounted thereon, a platecarried by said pins, springs adapted to resist relative movement ofsaid plate and support toward each other, a glue pad carrying platecarried by said first mentioned plate and movable transversely of thepath of said relative movement, and adjusting devices carried b one ofsaid plates adapted to secure said glue pad carrying plate in positionrelative to said other plate.

18. In an apparatus of the character described, in combination, asupport for an article to be coated, coating means, means adapted tocause relative approaching and receding movements between said supportreceding movements between said support and said coating means, andmeans adapted to limit the amount of said approaching movementcomprising a slidable stop rod, a spring adapted to urge said rod towardstopping position, means to adjust the tension of said spring, a pivotedarm having a slot, an anti-friction roller on said arm adapted tocooperate with an article on said support, and a pin on said rod inengagement with said slot.

In testimony whereof I aflix my signature, in the presence of twowitnesses.

LYNDON C. PALMER.

Witnesses:

HAROLD C. COPPINS, JAs. O. HOLMES.

